What should I do about this?

Okay so I have done this soccer camp that only lasts one week and it started monday and ends friday, i've made some pretty good friends and there's this one kid that's 11 that I made friends with and he got put in my age group cause he's really good at soccer we've talked alot but I realized today that I actually like him, me a 13 year old liking an 11 year old, but the only problem is he goes to a completely different school then me and I only have one day left to see him and then I'll have to wait till next summer, so what should I do? should I like ask for his cell # or email address or be bold and maybe give him a quick peck on the cheek when I leave? any other additional advice or suggestions would be great thanks:)